LAKE FOREST, ILLINOIS, APRIL 20, 2005 - Tenneco Automotive (NYSE: TEN) today commenced an offer to exchange up to $500 million principal amount of 8-5/8% Senior Subordinated Notes due 2014, which have been registered under the Securities Act of 1933, for a like amount of its 8-5/8% Senior Subordinated Notes due 2014, which were issued in November 2004 in a private placement. The offer is being made pursuant to the terms and conditions included in the company's prospectus dated April 11, 2005.

The terms of the new notes are substantially identical to the terms of the notes for which they are being exchanged, except that the transfer restrictions and registration rights applicable to the original notes generally do not apply to the new notes.

The exchange offer will expire at 5:00 p.m., New York City time, on May 18, 2005, unless extended by Tenneco Automotive.

Copies of the prospectus and other information relating to this exchange offer, including transmittal materials, may be obtained from the exchange agent, The Bank of New York Trust Company, N.A., c/o The Bank of New York, 101 Barclay Street - 7 East, New York, New York 10286, Attention: Mr. Randolph Holder.

This news release is for informational purposes only and shall not constitute an offer to sell or the solicitation of an offer to buy any securities of Tenneco Automotive nor shall there be any sale of these securities in any state in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of such state.

Tenneco Automotive is a $4.2 billion manufacturing company with headquarters in Lake Forest, Illinois and approximately 18,400 employees worldwide. Tenneco Automotive is one of the world's largest designers, manufacturers and marketers of emission control and ride control products and systems for the automotive original equipment market and the aftermarket. Tenneco Automotive markets its products principally under the Monroe®, Walker®, Gillet® and Clevite® Elastomer brand names. Among its products are Sensa-Trac® and Monroe Reflex® shocks and struts, Rancho® shock absorbers, Walker® Quiet-Flow® mufflers, Dynomax® performance exhaust products, and Clevite® Elastomer noise, vibration and harshness control components.